Lancer I Digital Testmeter PCB Option Installation Guide

This document describes the installation, adjustment, and troubleshooting of a Digital Testmeter PCB option for Lancer I Variable Frequency Drives. The meter mounts internally to the Inverter Main PCB to monitor controller performance and diagnose faults by reading low voltage power supplies, current reference/feedback, drive output frequency, bus voltage, and performing a Go/No-Go test of rectifier and inverter firing circuits.